为什么虚拟语气表将来有时用过去式，有时用would/should/could do 奇怪

Answer 1

虚拟语气呢是英语语法的一个重要分类 英语语法其实是最枯燥的一部分 没有道理可讲，只有死机硬背规则+记忆特例

虚拟语气讲究时态倒退，即对常规使用的时态倒退

过去 现在 将来 虚拟的确不一样 但都遵循时态倒退原则

在时态倒退之后，必然会出现和常规不同的用法，因为你主观已经适应了常规用法，所以会觉得奇怪啦

就好像我那时候就觉得 i were…… 很奇怪 :-D

看看例句刷刷题就慢慢习惯啦

希望能帮到你:-D

Answer 2

你只要记得虚拟语气表示与将来事实相反时表示如下：

从句动词：过去式/should+动词原形/ were to +不定式
主句动词：should/would/could/might+动词原形
If it should rain tomorrow, we would not go camping.
We would stay at home if it should rain tomorrow.
If I were to do the examination I would do it some other way.

追问

这我知道，可为什么would rather的虚拟表将来用过去式，而wish的虚拟表将来用would do

追答

would rather后接动词原形，但接从句时要用虚拟语气（宁愿，但愿）。
Would rather +主语+一般过去时（表示与现在或将来相反）
Would rather +主语+过去完成时（表示与过去相反）
即would rather +从句，常用过去时did表示与现在或将来事实相反的愿望，用过去完成时had done表示与过去事实相反的愿望。
I would rather you came tomorrow.
I would rather you hadn’t told her the news.
Frankly speaking, I would rather you came tomorrow. The manager isn’t available today.
I would rather you had gone to the party with me last night. It was really wonderful.

wish表示将来不大可能实现的愿望时
构成：主语 + wish (that) + 从句主语 + would/should/could/might + 原形动词
例如：I wish that he could try again.
I wish that someday I should live on the moon.
We wish that they would come soon

wish表示与现在事实相反的愿望
构成：主语 + wish (that) + 从句主语 + 动词过去式 （be 一律用were）
例如：I wish that the experiment were a success.
We wish we had wings. 我们希望有翅膀。

wish表示与过去事实相反的愿望
构成：主语 + wish (that) + 从句主语 + would/could + have + 过去分词
或had + 过去分词
例如：I wish that you had called yesterday.
I wish that I could have gone with you last night.
I didn’t go to the party, but I do wish I had been there.

这些规则是既定的。好几天没上线，刚刚看到，希望对你有帮助。

Answer 3

看虚拟的对象。过去，现在，将来的虚拟是不一样的

追问

?什么时候用would do

追答

你说这个？would，should，could只是意思不同而已。。具体根据句子的意思而来

Answer 4

就是语态的一种表现形式。

追问

?,什么时候用过去式

追答

if 从句主句

过去 过去完成时 would/ should/could/ have done
现在 一般过去式 would/ should/could/ +动词原形
将来 1.一般过去时
（be多用于were） would/should/could/might +动词原形
2.should do,

3.were to do

追问

这我知道，可为什么would rather的虚拟表将来用过去式，而wish的虚拟表将来用would do